Finding the Fourth Proportional to 347.15, 478.62 and 245.99
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Solution
The fourth proportional to 347.15, 478.62 and 245.99 is: 339.15
Step by Step Solution
- Step 1: Write the proportion equation
347.15 : 478.62 = 245.99 : x - Step 2: Convert to fraction form
347.15/478.62 = 245.99/x - Step 3: Cross multiply
347.15x = 478.62 × 245.99 - Step 4: Simplify right side
347.15x = 117,733.34 - Step 5: Solve for x
x = 117,733.34/347.15 - Step 6: Final answer
x = 339.15
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.